GOODWILL (Changes in Carrying Amount of Goodwill by Reportable Segment) (Details) - USD ($) $ in Millions		3 Months Ended	9 Months Ended
		Sep. 30, 2022	Sep. 30, 2022
Goodwill [Line Items]
Goodwill, Beginning balance			$ 3,696.7
Goodwill of acquired businesses	[1]		58.7
Goodwill impairment		$ (50.9)	(50.9)
Goodwill, Ending balance		3,704.5	3,704.5
Aggregates [Member]
Goodwill [Line Items]
Goodwill, Beginning balance			3,316.6
Goodwill of acquired businesses	[1]		13.3
Goodwill impairment
Goodwill, Ending balance		3,329.9	3,329.9
Asphalt [Member]
Goodwill [Line Items]
Goodwill, Beginning balance			91.6
Goodwill of acquired businesses	[1]
Goodwill impairment
Goodwill, Ending balance		91.6	91.6
Concrete [Member]
Goodwill [Line Items]
Goodwill, Beginning balance			288.5
Goodwill of acquired businesses	[1]		45.4
Goodwill impairment			(50.9)
Goodwill, Ending balance		283.0	283.0
Calcium [Member]
Goodwill [Line Items]
Goodwill, Beginning balance
Goodwill of acquired businesses	[1]
Goodwill impairment
Goodwill, Ending balance

[1] See Note 16 for acquisitions.